ligule

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ligule

a small, scale-like outgrowth from a leaf, found in club mosses and some grasses.
References in periodicals archive ?
1] of fresh mass) in ligules of inflorescences of gerberas 'Intenza' held for 9 days at different temperatures.
For example, the large size of its ligules may be used as a landing platform for floral visitors with a range of sizes (Leppik, 1977).
5-8 mm wide, flat to M-shaped, glabrous, the margins smooth or sparingly tuberculate-scabrous, gradually tapering into a roughened triangular tip; leaf sheaths 2-9 cm long, more or less tightly enveloping culms, glabrous, sparsely to strongly reddened or reddish purple; inner band of leaf sheaths reddish-purple-tinged except for the hyaline, friable apex, glabrous, the apex concave; ligules 2.
aureum (C4) had large involucel bracts, which were ovate or circular, and large cauline leaves, amplexicaul at base, cordate or with large ligules.
The populations studied were verified to be Nereis acuminata [or its synonyms (Day 1973) Nereis (Neanthes) arenaceodentata, and Nereis (Neanthes) caudata] based on morphology of denticles, setae, ligules, cirri, and head shape (Ehlers 1868; Moore 1903; Pettibone 1963; Day 1973).
Diagnosis: The prostomium is split anteriorly and the notopodial ligules are well developed anteriorly but reduced in posterior segments.
Expanded leaves were measured from their ligules, expanding leaves from the ligule of the last fully expanded leaf, and the measure of senescent leaves considered only the green portion of the leaf blade.
Plants perennial, tufted, caespitose, with a knotty rhizomatous base, the rhizomes short and thin; culms 15-30(-55) cm tall; nodes 2-3, branching below, puberulent to scabrellous; internodes short covered by the sheaths, glabrous, puberulent to shortly hirtellous near the nodes; leaves basal, sheaths 3-4(7) cm long, longer than the internodes, the upper with a reduced blade below the synflorescence, the lowermost purple and short-hirsute, the next green and glabrous, margins shortpilose; ligules 0.
Collars can contain appendages such as auricles and ligules.
4 mm wide, flattish or channelled (at least proximally), glabrous, margins with unbranched and 2-branched prickle hairs, the unbranched ones antrorse or retrorse; inner band of leaf sheaths white-hyaline or pale brown, glabrous, the apex slightly concave; ligules 0.